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Safety Precautions (Common)
Note: The undermentioned is common for all H7GP/H7HP models.
!CAUTION
This may occasionally cause electric shock, fire, or malfunction.
Never disassemble, repair, or modify the H7GP/H7HP.
This may occasionally cause electric shock, fire, or malfunction.
Do not allow metal fragments or lead wire scraps to fall inside the
H7GP/H7HP.
■ Precautions for Safe Use
Observe the following items to ensure the safe use of this product.
Environmental Precautions
• Store the H7GP/H7HP within the specified ratings. If the H7GP/
H7HP has been stored at temperatures − 10 ° C or lower, let it stand
for 3 hours or longer at room temperature before turning ON the
power supply.
• Use the H7GP/H7HP within the specified ratings for operating
temperature and humidity.
• Do not operate the H7GP/H7HP in locations subject to sudden or
extreme changes in temperature, or locations where high humidity
may result in condensation.
• Do not use the H7GP/H7HP in locations subject to vibrations or
shock. Extended use in such locations may result in damage due to
stress.
• Do not use the H7GP/H7HP in locations subject to excessive dust,
corrosive gas, or direct sunlight.
• Install the H7GP/H7HP well away from any sources of static
electricity, such as pipes transporting molding materials, powders,
or liquids.
• The H7GP/H7HP is not waterproof or oil resistant.
Do not use it in locations subject to water or oil.
• The life expectancy of internal components may be reduced if the
H7GP/H7HP is mounted side-by-side.
• Do not use organic solvents (such as paint thinner or benzine),
strong alkaline, or strong acids because they will damage the
external finish.
Usage Precautions
• Install a switch or circuit breaker that allows the operator to
immediately turn OFF the power, and label it to clearly indicate its
function.
• Be sure to wire the terminals correctly.
• Do not install input lines in the same duct or conduit as power
supply or other high-voltage lines. Doing so may result in
malfunction due to noise. Separate the input lines from high-
voltage lines.
• Internal elements may be destroyed if a voltage outside the rated
voltage is applied.
• Maintain voltage fluctuations in the power supply within the
specified range.
• Use a switch, relay, or other contact so that the rated power supply
voltage will be reached within 0.1 s. If the power supply voltage is
not reached quickly enough, the H7GP/H7HP may malfunction or
outputs may be unstable.
• Although the H7GP/H7HP power supply (primary side) is isolated
from control circuits (secondary side) by a transformer, the primary
and secondary sides of the transformer are linked by a capacitor,
making it possible for high-frequency components to leak to the
secondary side. Take adequate precautions against electrical
shock. Do not connect input circuits to exposed parts (such as the
machine body) and be sure that the power supply is turned off
before wiring.
Flush Mounting
The panel surface is water-resistive (conforming to NEMA 4 and
IP66). In order to prevent the internal circuit from water penetration
through the space between the counter and operating panel, attach a
rubber packing between the counter and operating panel and secure
the rubber packing with the Y92F-3@ flush-mounting adaptor.
Be sure the rubber packing is installed in the correct direction. The
wider portion must be facing the panel when installed, as shown in
the following illustration. Using a flat-head screwdriver, press in the
Mounting Adapter until it cannot be pressed in any further in order to
ensure water-resistive performance.
Wider portion
Adapter
facing panel
Panel
Other
Oil resistance is not applicable to all types of oil. Be sure to test any
specific oils before actual application.
Total Counter/Time Counter
Control
Display
circuit
circuit
Input
circuit
H7GP/H7HP
15
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